Colored cementing material, colored pouring type asphalt concrete and preparation method of colored cementing material and colored pouring type asphalt concrete

Abstract

The invention provides a colored cementing material, colored pouring asphalt concrete and a preparation method of the colored cementing material and the colored pouring asphalt concrete, and belongs to the technical field of pavement paving, the colored cementing material comprises the following components in parts by weight: 15-42 parts of base oil, 4-12 parts of a polymer modifier, 16-50 parts of resin, 1-3 parts of a viscosity reducer, 0.05-1.5 parts of a coupling agent and 25-45 parts of pigment. The colored pouring type asphalt concrete comprises the following components in parts by weight: 12-14 parts of the colored cementing material and 100 parts of stone. The colored pouring type asphalt concrete prepared from the colored cementing material has excellent performance, can be directly subjected to self-compacting pavement on a road surface, does not need equipment rolling or later spraying, and is simple and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of road paving, and in particular to a colored binder and colored cast asphalt concrete and a preparation method thereof. Background Art

[0002] The paving materials of colored pavement are generally composed of high-strength binders and anti-skid aggregates, which have the characteristics of high wear resistance, high anti-skid properties and beautiful appearance. Compared with ordinary asphalt concrete and cement concrete pavement, the variability of the color of colored pavement is of great significance for beautifying urban space design, shaping urban style and improving road driving safety. Colored pavement has been widely used in tunnels, bridges, sharp bends, ramps, bicycle lanes, pedestrian overpasses and other areas.

[0003] At present, the main method of colored pavement in my country is to spray colored asphalt on the surface of ordinary asphalt concrete or to roll asphalt concrete mixed with colored asphalt, but this method faces many problems, such as complicated construction procedures, and it is difficult to construct in old small bridges, narrow spaces, etc. due to equipment volume and construction technology. Therefore, there is a need for a colored pouring asphalt concrete that can be directly paved and self-compacted without professional equipment rolling, so as to solve the problem of complicated process and equipment volume affecting construction. Summary of the invention

[0004] The invention provides a colored pouring asphalt concrete that can be directly paved to achieve self-compacting without equipment rolling. The concrete has good performance and can be directly paved on the road surface without equipment rolling or later spraying, which is simple and convenient.

[0005] One of the objects of the present invention is to provide a colored binder.

[0006] The second purpose of the present invention is to provide a method for preparing the colored binder.

[0007] A third object of the present invention is to provide a colored poured asphalt concrete.

[0008] A fourth object of the present invention is to provide a method for preparing colored poured asphalt concrete.

[0009] In order to achieve the above-mentioned purpose of the present invention, the following technical solutions are particularly adopted:

[0010] In a first aspect, the present invention provides a colored binder, comprising the following components by weight: 15 to 42 parts of base oil, 4 to 12 parts of polymer modifier, 16 to 50 parts of resin, 1 to 3 parts of viscosity reducer, 0.05 to 1.5 parts of coupling agent, and 25 to 45 parts of pigment;

[0011] The base oil is one or more selected from the group consisting of the reduced line oil produced by Foshan Gaofu PetroChina Fuel Asphalt Co., Ltd., the Iranian extracted oil produced by Foshan Gaofu PetroChina Fuel Asphalt Co., Ltd., the reduced line oil produced by PetroChina Yunnan Petrochemical Co., Ltd., and the hydrocracking cycle oil produced by PetroChina Yunnan Petrochemical Co., Ltd.

[0012] The following is a detailed description of each component:

[0013] The base oil of the present invention is one or more of the following: the reduced oil produced by Foshan Gaofu PetroChina Fuel Asphalt Co., Ltd., Iranian extracted oil, the reduced oil produced by PetroChina Yunnan Petrochemical Co., Ltd., and hydrocracking cycle oil. The reduced oil produced by Foshan Gaofu PetroChina Fuel Asphalt Co., Ltd. and the reduced oil produced by PetroChina Yunnan Petrochemical Co., Ltd. are preferred.

[0014] Preferably, the structural group composition of the base oil is alkyl carbon ratio (C P ) 50~70%, cycloalkane carbon rate (C N )8~30%, aromatic carbon rate (C A )20~30%.

[0015] The structural group is to regard the complex base oil as a complex molecular mixture composed of aromatic, cycloalkyl and alkyl structural units. P ), cycloalkane carbon ratio (C N ) and aromatic carbon rate (C A ) is determined and calculated according to the standard SH / T 0729-2004 Carbon distribution and structural group composition calculation method of petroleum fractions (ndM method). P The value refers to the percentage of carbon atoms on the alkyl side chain to the total carbon atoms in the molecule. N The value refers to the percentage of carbon atoms on the cycloalkane ring to the total number of carbon atoms in the molecule. A The value refers to the percentage of carbon atoms on the aromatic ring to the total number of carbon atoms in the molecule.

[0016] The present invention can provide the grease composition of the color binder by using a specific base oil. The base oil is mainly composed of cycloalkyl and alkyl, and is matched with a part of aromatic molecular mixture, so that the color binder and the color cast asphalt concrete composed of the color binder and stone can achieve good high and low temperature performance.

[0017] The amount of base oil added is 15 to 42 parts, for example, 15 parts, 20 parts, 30 parts, 40 parts, 42 parts, but not limited thereto.

[0018] The polymer modifier refers to a thermoplastic elastomer with a molecular weight of more than 100,000, including but not limited to styrene-butadiene-styrene block copolymer (SBS), hydrogenated SBS (SEBS), styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene rubber (SBR), polyolefin elastomer, etc.

[0019] The amount of the polymer modifier added is 4 to 12 parts, for example, 4 parts, 6 parts, 8 parts, 10 parts, 12 parts, but not limited thereto.

[0020] Adding a specific amount of polymer modifier can improve the heat resistance and flexibility of the color binder.

[0021] The resin is a solid resin, including but not limited to petroleum resin, rosin-modified phenolic resin, acrylic resin, dehydrated malic acid resin, terpene resin, etc.; the softening point of the resin is above 100° C., and the chromaticity of the resin is ≤3.

[0022] The amount of the resin added is 16 to 50 parts, for example, 16 parts, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, but is not limited thereto.

[0023] Adding a specific amount of solid resin can provide the hardness and cohesion of the color binder.

[0024] The viscosity reducer is a solid viscosity reducer, including but not limited to polyethylene wax, oxidized polyethylene wax, Fischer-Tropsch wax, polypropylene wax, etc.; the melting point of the viscosity reducer is 95-130°C.

[0025] The amount of the viscosity reducer added is 1 to 3 parts, for example, 1 part, 2 parts, or 3 parts, but is not limited thereto.

[0026] Adding a specific amount of viscosity reducer can reduce the viscosity of the color binder and improve its heat resistance.

[0027] The coupling agent is a silane coupling agent, including but not limited to aminosilane coupling agent, acyloxysilane coupling agent, epoxysilane coupling agent, alkylsilane coupling agent and the like.

[0028] The amount of the coupling agent added is 0.05 to 1.5 parts, for example, 0.05 parts, 0.1 parts, 0.5 parts, 1 part, 1.5 parts, but not limited thereto.

[0029] Adding a specific amount of coupling agent can improve the bonding strength of the mixed colored binder and stone.

[0030] The pigment is an inorganic color powder, including but not limited to titanium dioxide, chrome yellow, medium chrome yellow, dark chrome yellow, lemon chrome yellow, iron oxide red, iron oxide blue, chrome oxide green, chrome green, cobalt green, etc. It can be prepared from one or more color powders according to the color requirements of colored poured asphalt concrete.

[0031] The amount of the pigment added is 25 to 45 parts, for example, 25 parts, 30 parts, 35 parts, 40 parts and 45 parts, but is not limited thereto.

[0032] Adding a certain amount of color powder can provide the color of the colored binder.

[0033] The present invention prepares a colored binder by selecting a specific base oil and matching a specific proportion of a polymer modifier, a resin, a viscosity reducer, a coupling agent and a color powder. The colored binder has suitable high and low temperature properties and can be used to prepare colored cast asphalt concrete.

[0034] In a second aspect, the present invention provides a method for preparing the above-mentioned colored binder, comprising the following steps:

[0035] 1) Use a small disperser to fully mix the base oil and the polymer modifier at a mixing speed of 100 to 300 r / min. After mixing, let it stand and swell for 60 to 90 minutes;

[0036] 2) using a small disperser to fully mix the resin, viscosity reducer, coupling agent and pigment with the mixture of step 1) for 5 to 15 minutes at a mixing speed of 100 to 300 r / min;

[0037] 3) The mixture obtained in step 2) is put into a twin-screw shear extruder, and the heating temperature is controlled at 150° C. to 180° C. After the mixture is extruded into a cooling pool, it is cooled in a circulating water bath and then dried to obtain a block-shaped finished color binder.

[0038] In a third aspect, the present invention provides a colored poured asphalt concrete, comprising the following components in parts by weight: 12 to 14 parts of the above-mentioned colored binder and 100 parts of stone.

[0039] The description of the colored binder is the same as that described above and will not be repeated here.

[0040] The stone material is graded stone material, including aggregate (coarse aggregate, fine aggregate) and mineral powder, the aggregate is one or more selected from basalt, limestone, diabase and quartz sand, and the mineral powder is limestone mineral powder.

[0041] The particle composition ratio of graded stone and pigment jointly meets the grading requirements of GA10 or GA13 in Table 5.2.1 of JTG / T 3364-02—2019.

[0042] In a fourth aspect, the present invention provides a method for preparing the above-mentioned colored poured asphalt concrete, comprising the following steps:

[0043] The stone material and the colored binder are mixed to obtain colored cast asphalt concrete.

[0044] Preferably, the mixing temperature is 230-240°C.

[0045] In some embodiments, the specific steps are:

[0046] Place the stone materials (coarse aggregate, fine aggregate and mineral powder) in an oven at 260-280℃ and dry them to constant weight;

[0047] Adjust the mixing temperature of the mixing pot to 230-240°C, first dry-mix the coarse aggregate and fine aggregate in the stone for 10-20 seconds, then add the mineral powder and colored binder in the stone, and continue stirring for 30-40 minutes to obtain colored poured asphalt concrete.

[0048] Beneficial Effects

[0049] (1) The colored cast asphalt concrete provided by the present invention does not require rolling and is a self-leveling colored cast asphalt concrete with almost no voids, which reduces the construction difficulty of the asphalt concrete and does not require subsequent rolling or spraying. Since there are no voids, water cannot enter, thereby improving the durability of the asphalt concrete. It can be used in tunnels, bridges, sharp bends, ramps, bicycle lanes, pedestrian overpasses and other areas, and has the advantages of beautiful appearance, simple construction, and long-lasting wear resistance.

[0050] (2) The colored cast asphalt concrete provided by the present invention is easy to produce. The colored binder does not need to be heated and can be put into the mixing equipment together with the stone. It is particularly suitable for the construction of small and medium-sized colored cast projects.

[0051] (3) The present invention uses a specific base oil to prepare a special colored binder, which can be used to prepare colored cast asphalt concrete in a simple way to obtain excellent performance. Ordinary base asphalt is black and cannot be colored, and cannot be used to prepare colored cast asphalt concrete.

[0052] The present invention has been described in detail above, but the above embodiments are only illustrative in nature and are not intended to limit the present invention. In addition, this article is not limited by any theory described in the above prior art or invention content or the following examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 Showing the appearance of yellow poured asphalt concrete.

[0054] Figure 2Shows the iron red cast asphalt concrete appearance. DETAILED DESCRIPTION

[0055] The present invention is further described below in conjunction with examples. It should be noted that the following examples are provided for illustrative purposes only and do not constitute a limitation on the scope of protection claimed for the present invention.

[0056] Unless otherwise specified, the raw materials, reagents, methods, etc. used in the examples are conventional raw materials, reagents, methods in the art.

[0057] The three-line oil comes from PetroChina Yunnan Petrochemical Co., Ltd.;

[0058] The oil extracted from Iran comes from Foshan Gaofu PetroChina Fuel Asphalt Co., Ltd.;

[0059] C5 petroleum resin comes from Zibo Qiwei Chemical Co., Ltd.;

[0060] C9 petroleum resin comes from Zibo Qiwei Chemical Co., Ltd.;

[0061] Dehydrated malic acid resin was from Shangrao Sinan Resin Co., Ltd.;

[0062] The polyethylene wax is EP920P polyethylene wax from Qingdao East International Trade Co., Ltd.;

[0063] Hexadecyltrimethoxysilane was from Shanghai Aladdin Biochemical Technology Co., Ltd.;

[0064] Octadecyltrimethoxysilane was from Shanghai Aladdin Biochemical Technology Co., Ltd.;

[0065] Epoxytriethoxysilane was from Shanghai Aladdin Biochemical Technology Co., Ltd.;

[0066] The basalt material comes from Emeishan Xiangchen Basalt Stone Co., Ltd.

[0067] The limestone material comes from Chongqing Yongchuan Chengxing Building Materials Co., Ltd.

[0068] The diabase material comes from Guangxi Dahua Tonghai Diabase Material Co., Ltd.;

[0069] The quartz sand comes from Chongqing Qingyuan Rongshun Water Purification Materials Co., Ltd.;

[0070] The limestone powder comes from Quanfeng Jianpu Building Materials Factory in Tongji Town, Pengzhou City.

[0071] Example 1

[0072] Preparation of color binder:

[0073] 21.6 parts of three-line oil and 6.7 parts of SBS (PetroChina 6302H) are fully mixed with a small disperser at a mixing speed of 100-300 r / min, and the mixture is allowed to stand for swelling for 60 minutes; 24.5 parts of C5 petroleum resin, 2.7 parts of dehydrated malic acid resin, 1.5 parts of Fischer-Tropsch wax viscosity reducer (Sasobit produced in South Africa), 0.1 parts of hexadecyl trimethoxysilane coupling agent and 42.9 parts of chrome yellow powder are fully stirred with the above mixture for 10 minutes at a mixing speed of 100-300 r / min to mix evenly; the above mixture is put into a twin-screw shear extruder, the heating temperature is controlled at 150°C-180°C, the mixture is extruded into a cooling pool, cooled by a circulating water bath, dried after cooling, and finally packaged into bags to obtain a block-shaped finished color binder.

[0074] Preparation of colored poured asphalt concrete:

[0075] Place the stone (35.6 parts of 5-10mm diabase coarse aggregate, 53.7 parts of 0-5mm limestone fine aggregate and 10.7 parts of limestone mineral powder) in a 260-280℃ oven and dry to constant weight. Adjust the mixing temperature of the mixing pot to 230-240℃, first dry mix the coarse aggregate and fine aggregate in the stone for 10-20 seconds, then add the mineral powder and 14 parts of colored binder in the stone, and continue stirring for 30-40 minutes to obtain yellow cast asphalt concrete. Figure 1 shown.

[0076] Example 2

[0077] Preparation of color binder:

[0078] Use a small disperser to fully mix 28.6 parts of Iranian extracted oil with 8.9 parts of SBS (Yueyang Petrochemical 791-H) at a mixing speed of 100-300 r / min, and let it stand for swelling for 90 minutes after mixing; 32.8 parts of C9 petroleum resin, 3.2 parts of C5 petroleum resin, 2.0 parts of polyethylene wax, 1.4 parts of octadecyltrimethoxysilane and 23.1 parts of iron oxide red powder are fully stirred with the previous mixture for 10 minutes at a mixing speed of 100-300 r / min to mix evenly; the above mixture is put into a twin-screw shear extruder, the heating temperature is controlled at 150°C-180°C, the mixture is extruded into a cooling pool, cooled in a circulating water bath, dried after cooling, and finally packaged into bags to obtain a block-shaped finished color binder.

[0079] Preparation of colored poured asphalt concrete:

[0080] Place the stone (31.3 parts of 5-10mm limestone coarse aggregate, 9.7 parts of quartz stone coarse aggregate, 46.4 parts of 0-5mm limestone fine aggregate and 12.6 parts of limestone mineral powder) in a 260-280℃ oven and dry to constant weight. Adjust the mixing temperature of the mixing pot to 230-240℃, first dry mix the coarse aggregate and fine aggregate in the stone for 10-20 seconds, then add the mineral powder and 12 parts of colored binder in the stone, and continue stirring for 30-40 minutes to obtain iron red cast asphalt concrete, such as Figure 2 shown.

[0081] Example 3

[0082] Preparation of color binder:

[0083] Use a small disperser to fully mix 24.3 parts of three-line oil with 7.5 parts of SEBS (Yueyang Petrochemical YH501T) at a mixing speed of 100-300 r / min, and let it stand for swelling for 90 minutes after mixing; 27.5 parts of C9 petroleum resin, 3.0 parts of C5 petroleum resin, 1.7 parts of Fischer-Tropsch wax viscosity reducer (Sasobit produced in South Africa), 0.2 parts of epoxy triethoxysilane, 28.6 parts of iron oxide blue powder and 7.2 parts of titanium dioxide are fully stirred with the previous mixture for 10 minutes at a mixing speed of 100-300 r / min to mix evenly; the above mixture is put into a twin-screw shear extruder, the heating temperature is controlled at 150°C-180°C, the mixture is extruded into a cooling pool, cooled in a circulating water bath, dried after cooling, and finally packaged into bags to obtain a block-shaped finished color binder.

[0084] Preparation of colored poured asphalt concrete:

[0085] Place the stone (37.4 parts of 5-10mm basalt coarse aggregate, 49.5 parts of 0-5mm basalt fine aggregate and 13.1 parts of limestone powder) in an oven at 260-280℃ and dry to constant weight. Adjust the mixing temperature of the mixing pot to 230-240℃, first dry mix the coarse aggregate and fine aggregate in the stone for 10-20 seconds, then add the mineral powder and 13 parts of colored binder in the stone, and continue stirring for 30-40 minutes to obtain colored cast asphalt concrete.

[0086] The comparative example is LT-70# decolorized asphalt produced by Shenzhen Root New Material Technology Co., Ltd. The decolorized asphalt is heated to 170-180°C and added to the stone together with the mineral powder. The same stone as in Example 3 (plus 3% red iron oxide powder relative to the stone) is used to prepare colored cast asphalt concrete.

[0087] Performance Testing

[0088] The test standards were carried out in accordance with the relevant test methods of the "Test Code for Asphalt and Concrete Mixtures for Highway Engineering" (JTG E20-2011) and the "Technical Specification for Design and Construction of Highway Steel Bridge Deck Pavement" (JTG T3364-02-2019). The results are shown in Table 1.

[0089] Table 1 Performance comparison of colored poured asphalt concrete

[0090]

[0091] It can be seen that the penetration rate and penetration increment of the colored poured asphalt concrete provided in the embodiment of the present application, especially the low-temperature bending strain of -10°C, are significantly better than those of the comparative example (a low temperature of -10°C is a relatively difficult indicator to achieve for colored asphalt concrete).

[0092] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may be modified, or some or all of the technical features thereof may be replaced by equivalents, without departing from the spirit and essence of the claims of the present invention; and these modifications or replacements are still within the scope defined by the claims of the present invention.

Claims

1. A colored binder, characterized in that: The invention comprises the following components in parts by weight: 15 to 42 parts of base oil, 4 to 12 parts of polymer modifier, 16 to 50 parts of resin, 1 to 3 parts of viscosity reducer, 0.05 to 1.5 parts of coupling agent, and 25 to 45 parts of pigment; The base oil is one or more selected from the group consisting of the reduced line oil produced by Foshan Gaofu PetroChina Fuel Asphalt Co., Ltd., the Iranian extracted oil produced by Foshan Gaofu PetroChina Fuel Asphalt Co., Ltd., the reduced line oil produced by PetroChina Yunnan Petrochemical Co., Ltd., and the hydrocracking cycle oil produced by PetroChina Yunnan Petrochemical Co., Ltd.

2. The color binder according to claim 1, characterized in that: The structural group composition of the base oil is alkyl carbon ratio C P 50~70%, cycloalkane carbon rate C N 8~30%, aromatic carbon rate C A 20~30%.

3. The color binder according to claim 1, characterized in that: The polymer modifier is one or more selected from SBS, SEBS, SIS, SBR, and polyolefin elastomer.

4. The color binder according to claim 1, characterized in that: The resin is one or more selected from petroleum resin, rosin-modified phenolic resin, acrylic resin, dehydrated malic acid resin, and terpene resin; the softening point of the resin is above 100° C., and the chromaticity of the resin is ≤3.

5. The color binder according to claim 1, characterized in that: The viscosity reducer is one or more selected from polyethylene wax, oxidized polyethylene wax, Fischer-Tropsch wax, and polypropylene wax; the melting point of the viscosity reducer is 95-130°C.

6. The color binder according to claim 1, characterized in that: The coupling agent is one or more selected from aminosilane coupling agents, acyloxysilane coupling agents, epoxysilane coupling agents, and alkylsilane coupling agents.

7. The color binder according to claim 1, characterized in that: The pigment is one or more selected from titanium dioxide, chrome yellow, medium chrome yellow, dark chrome yellow, lemon chrome yellow, iron oxide red, iron oxide blue, chrome oxide green, chrome green and cobalt green.

8. The method for preparing a colored binder according to any one of claims 1 to 7, characterized in that: The following steps are involved: 1) Use a small disperser to fully mix the base oil and the polymer modifier at a mixing speed of 100 to 300 r / min. After mixing, let it stand and swell for 60 to 90 minutes; 2) using a small disperser to fully mix the resin, viscosity reducer, coupling agent and pigment with the mixture of step 1) for 5 to 15 minutes at a mixing speed of 100 to 300 r / min; 3) The mixture obtained in step 2) is put into a twin-screw shear extruder, and the heating temperature is controlled at 150° C. to 180° C. After the mixture is extruded into a cooling pool, it is cooled in a circulating water bath and then dried to obtain a block-shaped finished color binder.

9. A colored poured asphalt concrete, characterized in that: The invention comprises the following components in parts by weight: 12 to 14 parts of the colored binder described in any one of claims 1 to 7 and 100 parts of stone.

10. The method for preparing colored poured asphalt concrete according to claim 9, characterized in that: The following steps are involved: Mixing the stone material and the colored binder to obtain colored cast asphalt concrete; Preferably, the mixing temperature is 230-240°C.

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